The Depression-Happiness Scale, a measure of a state or a trait? Test-retest data over two years.
Lewis
C A
CA
School of Behavioural and Communication Sciences, University of Ulster at Magee College, Northern Ireland.
Joseph
S
S
D000328:Adult; D003863:Depression / Q000175:diagnosis* / Q000523:psychology*; D005260:Female; D006240:Happiness; D006801:Humans; D009660:Northern Ireland; D011581:Psychological Tests; D015203:Reproducibility of Results; D013997:Time Factors